So... (an open question to all graduate students/former graduate students)

[kirideth]

What do you do if you spend an extended period of time working on your thesis, and right near the end come to the conclusion that it can't be done? I mean, the work would still be there and still be significant, but the overall conclusion would be that it's a failed idea, at least with this specific approach.

Because right now, I'm absolutely terrified that'll happen to me.